Messages in this thread |  | | Date | Tue, 04 Sep 2001 15:35:26 -0400 | From | "Christopher Friesen" <> | Subject | Re: Should I use Linux to develop driver for specialized ISA card? |
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Roger Larsson wrote: > > On Tuesday den 4 September 2001 18:24, Christopher Friesen wrote: > > Fred wrote: > > > I'm curious, Alan, Why? I'm a hardware developer, and I would have > > > assumed that linux would have been ideal for real time / embedded > > > projects? (routers / controllers / etc.) Is there, for instance, a reason > > > to suspect that linux would not be able to respond to interrupts at say > > > 8Khz? > > > of course I know nothing of rtlinux so I'll read. > > > > I'm involved in a project where we are using linux in an embedded > > application. We've got a gig of ram, no hard drives, no video, and the only > > I/O is serial, ethernet and fiberchannel. > > > > We have a realtime process that tries to run every 50ms. We're seeing > > actual worst-case scheduling latencies upwards of 300-400ms.
> 1) Why shouldn't the low-latency patches work for another architecture? > Andrew Morton might be interested to fix other architectures too. > (but most patches are not in architecture specific code)
Well, a while back I took a look at the low latency patch and saw a bunch of arch-specific files being modified so I assumed that it wouldn't do much on a different architecture. I may have been wrong. I guess its time for me to do some testing.
Chris
-- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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